402401692 has 24 divisors (see below), whose sum is σ = 877968000. Its totient is φ = 156779760.

The previous prime is 402401683. The next prime is 402401693. The reversal of 402401692 is 296104204.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 402401692.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402401693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652942 + ... + 653557.

It is an arithmetic number, because the mean of its divisors is an integer number (36582000).

Almost surely, 2^402401692 is an apocalyptic number.

It is an amenable number.

402401692 is an abundant number, since it is smaller than the sum of its proper divisors (475566308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402401692 is a wasteful number, since it uses less digits than its factorization.

402401692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306521 (or 1306519 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 402401692 is about 20059.9524426156. The cubic root of 402401692 is about 738.2780096478.

Adding to 402401692 its reverse (296104204), we get a palindrome (698505896).

The spelling of 402401692 in words is "four hundred two million, four hundred one thousand, six hundred ninety-two".